精选优质文档-倾情为你奉上肯定句变否定句练习题1.I am a student.2.He is here.3.They are going to go fishing this week.4.They are working hard.5.She was a teacher.6.They were very happy.7.We can dance very well.8.He will come to see you at the school gate.9.They will clean the classroom tomorrow.10.They do sports every day.11.I often have breakfast at 7 a.m.12.We do morning exercises on the playground.13.He gets up at six.14.Tom has something to tell his teacher.15.My mother does some